FlexMonkey 1.0 is a professional grade testing tool and it's free.
FlexMonkey 1.0是个专业的测试工具，同时它还是免费的。
The Teknetics T2 is a new high-performance multi-purpose professional grade metal detector.
T2 黄金探测器是新型的高效能的，多用途的专业级别的金属探测器。
Professional-grade cameras now cost less than $1, 000.
现在，花不到 1000 美金就能买到专业等级的照相机。
Professional-grade cameras now cost less than $1, 000.
现在，花不到 1000 美金就能买到专业等级的照相机。
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